Highlighter function

Rex, Eli Joseph

Is there a highlighter function that you can use to highlight names on your family tree?

Áine.ní.Donnghaile

Good morning @Rex, Eli Joseph

There's no specific highlighter function. Some functions may help, depending on what you want to do.
For example, if you display your tree in Fan format, you have several coloring options to indicate family lines, countries of birth, or numbers of sources attached.

Would one of those help?